My tale of woe...
I volunteered at my son's elementary school (K~6th grade) to be their "Computer Guy" & bring their dead computer lab back to a working state. A bunch of Packard Bell boxes running an early version of Win95. Utter useless as they were, they all required an upgrade to the RAM, video card, networking (from ThickNet to Cat5), and a HDD that didn't rely on actual *rust* in the phrase "spinning rust". They didn't have any budget for "useless upgrades" (as the district head put it) so I essentially did it all out of my own pocket. Once they were all upgraded to a state where they could run anything newer than DOS at a rate that wouldn't get them assaulted by the monkies (children), I then went to work to update them to a newer version of the OS...
It took a subjective forever to get them all to a state where I could even THINK of installing various educational software like Encarta, various math/reading/early science/etc that their teachers would approve of, and various age-appropriate games (Jardinians, Oregon Trail, a Space Invaders clone that used "math meteorites" you had to calculate the correct answer to destroy, etc) that the monkies would desire. Once they were at a state where I thought they might withstand the abuse of said monkies, I made a backup image of the default system, and declared the computer lab Open For Business...
There was much cheering from the students whom hadn't had a working lab in so long that many had forgotten how to use the computers at all, a skill that was quickly remembered once a mouse was in their tiny little paws. Cue much delighted howling as chickens got blown up, settlers got eaten by wolves, & meteores got exploded. Cue many a pint bought me by the teachers whom, upon the restoration of the lab, now had a "free period" in which their students got to use the lab & the teacher got a break from the little shite-flinging monsters. That I'd included truely educational stuff (like Encarta) only helped those pints flow in their thanks. All seemed well until...
One of the more inquisitive monkies managed to find the File Explorer & started poking around the file system. They noticed a bunch of files that all had the same extension, but were not for some reason stored in the same place. So they decided to "clean up stuff" & move all the same-extension files to a same-name file folder. All the *.DLL's in a DLL folder, all the *.EXE's in an EXE folder, etc. The system kept running somehow, right up until the monkey told it to reboot, at which point the computer happily shite itself. Up goes a hand & the dreaded phrase uttered from little monkey lips: "Computer Guy, my computer's gone bonkers."
It took a while before I figured out what the kid had done, at which point I had to restore the computer to the default image. This wouldn't have been so traumatic except that it erased the little monster's high score in their favorite game. Cue much anguished howling, gnashing of teeth, & crying. I soothed their nerves by editing the not-really-a-text-file high score file to restore their score (minus the penis pun "initials"), and told them not to ever do the "cleaning" again or I'd refuse to restore their score. THAT got the little monster's attention, yes indeedy do.
I wound up earning "Volunteer of the Year" & enjoyed many a pint in after hours celebrations, but I swear to Cthulhu that those little monkies nearly drove me even more insane than I already am. =-Jp